# TEE Colour Doppler vs iPacemaker Device

The clearest difference is price: iPacemaker Device at Free against TEE Colour Doppler's $4.99. iPacemaker Device also leads on rating (4.7 vs 3.0) and update cadence (every 4 days vs every 24 months). TEE Colour Doppler's advantage is in-app purchases (none vs 7) and iOS requirement (6.0 vs 17.6). On ads and device support there is nothing between them.

iPacemaker Device is free to download; TEE Colour Doppler costs $4.99 up front. iPacemaker Device sells 7 in-app purchases, starting at $9.99 per month. TEE Colour Doppler asks for nothing beyond the download.

iPacemaker Device holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: iPacemaker Device has 364 ratings behind it against 2, so its average is the more settled of the two.

TEE Colour Doppler ships an update every 24 months, iPacemaker Device every 4 days. The most recent releases landed on June 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | TEE Colour Doppler | iPacemaker Device |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/tee-colour-doppler/id752231916/reviews) | **[4.7 (364 ratings)](https://appshunter.io/ios/app/ipacemaker-device/id1126088055/reviews)** |
| Number of ratings | 2 | **364** |
| Positive reviews | — | 27.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#45** |
| Size | 65 MB | 220 MB |
| Requires iOS | **6.0** | 17.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [University Health Network](https://appshunter.io/developer/361257574) | [IPACEMAKER S.R.L.](https://appshunter.io/developer/1780219062) |

## What reviewers say

### TEE Colour Doppler

[App page](https://appshunter.io/ios/app/tee-colour-doppler/id752231916)

This medical app visualizes cardiac blood flow using 2D and 3D color Doppler imaging. It aids in diagnosing and quantifying the severity of cardiac lesions by demonstrating normal flow patterns across heart structures.

**Highlights:** 2D and 3D echocardiography visualization, Color Doppler imaging for blood flow assessment, Rotatable 3D heart models, Color compare video clips, Demonstrates normal blood flow patterns

**In-app purchases:** none


### iPacemaker Device

[App page](https://appshunter.io/ios/app/ipacemaker-device/id1126088055)

**Currently charting:** #45 Top Grossing · Medical (US App Store)

Access a vast database of implantable cardiac devices, including pacemakers and defibrillators. Get detailed technical specifications, connector information, advisories, and MRI compatibility checks. Compare devices and explore algorithms to aid in selection and management.

**Highlights:** Extensive device database, Detailed technical datasheets, Connector and tool information, Advisories and safety warnings, Multibrand MRI compatibility evaluation, Algorithm descriptions, Side-by-side device comparison

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month subscription REGULAR | $9.99 | per month |
| 3 Months Subscription | $49.99 | per 3 months |
| 12 months subscription REGULAR | $49.99 | per year |
| 6 Months Subscription | $59.99 | per 6 months |
| 12 Months Subscription | $99.99 | per year |
| 12 months subscription PREMIUM | $109.99 | per year |
| 12 months subscription PREMIUM | $109.99 | per year |

**What reviewers like**

- 👍 Great resource for cardiac rhythm devices
- 👍 App is useful for professionals
- 👍 Some users find it helpful
- 👍 Support team helped some users

**What reviewers complain about**

- 💸 Prohibitively expensive
- 💸 Price increase is steep
- 💸 So expensive for no reason
- 💸 Creator got greedy
- 💸 Subscription fees are ridiculous

**Reported bugs**

- App keeps refreshing, cannot open
- App cannot be opened
- App enters interface and stops, cannot open
- App has not worked for years
- App hasn't worked for days

**Requested features**

- More equitable evaluation of company representation
- Fix app hanging/slow opening
- Update for newer devices
- Grandfather in lifetime members
- Refund original charge for lifetime members


## Frequently asked questions

### Is TEE Colour Doppler free?

TEE Colour Doppler costs $4.99, with no in-app purchases.

### Is iPacemaker Device free?

iPacemaker Device is free to download, with in-app purchases available.

### Which has better reviews, TEE Colour Doppler or iPacemaker Device?

iPacemaker Device is rated higher. TEE Colour Doppler averages 3.0 out of 5 from 2 ratings, while iPacemaker Device averages 4.7 from 364 ratings.

### Do TEE Colour Doppler or iPacemaker Device have ads?

Neither TEE Colour Doppler nor iPacemaker Device shows ads.

### Which is updated more often, TEE Colour Doppler or iPacemaker Device?

TEE Colour Doppler ships an update every 24 months, and iPacemaker Device every 4 days. Most recently, TEE Colour Doppler was updated on June 3, 2026 and iPacemaker Device on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*